What did Erwin Chargaff discover?

Explanation:

Erwin Chargaff Lived 1905 – 2002. Erwin Chargaff’s research paved the way for the discoveries of DNA’s structure and its method of replication. His observation that DNA varies from species to species made it highly credible that DNA was genetic material.

Erwin Chargaff was one of those men, making two discoveries that led James Watson and Francis Crick to the double helix structure of DNA. At first, Chargaff noticed that DNA – whether taken from a plant or animal – contained equal amounts of adenine and thymine and equal amounts of cytosine and guanine

answer by yourhope:

answer is

human impact on the environment can be seen in the deterioration of the !

: )